Saw-set.



Patented Nov. 27, |900.

W. MATHEWS.

S A W S E T.

(Application led Aug, 16, 1900.)

(No Model.)

1f' TFL' o ill* hlmlIl if wm 2223i NITE-D STATES Arnim uhren..

WILLIAM MATHEWS, OF OONNEAUT, OHIO.

SAW-S ET.

SPECIFICATION forming part of Letters Patent No. 662,453, dated November27, 1900.

Application filed August 16, 1900. Serial No. 27,108. (No model.)

T0 all whom t may concern; v

Be it known that I, WILL-IAM MATHnws, a citizen of the United States,residing at Oonneaut, in the county of Ashtabula and State of Ohio, haveinvented certain new and useful Improvements in Saw-Sets; and I dodeclare the following to be a full, clear, and eX- act description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.`

This invention relates to a new and improved saw-set, and is embodied inthe novel parts,arrangem ent,and combinations of parts hereinafterdescribed, and particularly set forth in the claims.

The objects of the invention are to provide a simple and efficientdevice for setting sawteeth in which the saw can be readily engaged withand disengaged from the holding means and adjusted to the setting-tool,to provide a simple adjustable gage which will permit of saws havingdifferent-sized teeth being properly adjusted to obtain the proper set,to provide means for insuring always the same" eX- act set for theteeth, and to provide the device with spring-holding arms for the'saw.

A further object of the invention is to provide a generally improved andsimplified device which can be readily applied to the workbench andwhich will be eflicient in all respects forthe purpose for which theinvention is intended.

With such and other objects in view the invention is embodied in thenovel parts, arrangement, and combination of parts hereinafter describedand shown in the drawings; but it is to be understood that I do notlimit my invention to the construction which for the sake ofillustration I have specifically described and illustrated in thedrawings.

In the drawings, Figure 1 is-an elevation of a saw'set embodying myinvention, showing the same applied to a work-bench or the like. Fig. 2is a top plan view of the saw-set, the means for securing the same tothe bench being removed. Fig. 3 is a longitudinal vertical sectionalview on the line S 3 of Fig. 2.

Referring to the drawings, wherein similar reference characters relateto like parts throughout the several views, A indicates a base andsaw-supporting plate or the like conveniently made of steel.Conveniently the plate A is Vadapted to be secured to a bench or thelike by means of a suitable clamp, such as the U-clamp B shown in thedrawings, one leg of said clamp being adapted to engage under the edgeof the workbench and the other leg of the clamp carrying a set-screw O,adapted to engage with the plate A, preferably in a socket d therein, tobind the same tightlyagainst the bench and retain the same in properposition thereon. The plate A is provided conveniently near one end witha channel or groove A', having an inclined face, the inclina-tion beingthat desired to be given to the saw-teeth in setting the same.

The saw, which is shown at X, is intended to be laid flat upon the plateA, with its teeth over the groove A', and for the purpose of holding thesaw rigidly on theplate and permitting the adjustment of the same Iprovide the plate with one or more, preferably two, spring-pressedholdingjaws D D'. The jaws D and D have shanks, which extend beside. thesides of the plateA and are pivoted there-- to, as by means ofpivot-screws CZ. A spring E is provided for each jaw, and, as will beseen in the drawings, the springs E are secured to the plate A beneaththe pivots d and have rearwardly-extending free ends engaging the rearends of the shanks of the jaws D D and acting to move the rear endsthereof up and the forward ends down to clamp the saw on the plate A. Ipreferably provide supporting lugs or bolts e on the sides of the plateA beneath the springs E to limit the movement of the same and enable agreater exertion of power on the jaws D and D". rThe jaws D D at theirforward ends are provided with lateral enlargements D2, overlying thebase-plate A.

Lying on the upper side of the plate A is a gage for the saw, (indicatedat F.) This gage is adapted to be secured with its forward edge over oradjacent the groove A' in the base-plate and to engage the teeth of thesaw held on the plate by the holding-jaws. The gage is adjustable towardand from the groove for the purpose -of limiting theinward movement ofthe saw and properly gaging the eX- tent of the set. For the purpose ofadjust- IOO , tween the thumb-nut and the shank.

ing and holding the gage I have shown the same provided with slots f,through which pass screw-threaded bolt-s f, on which are thumb-nuts f2,adapted to be screwed down tightly against the gage F to retain the samein the position to which it is adjusted. The plate Fat its forward edgeover the groove A is provided with a notch Il" for the passage of thesetting tool or hammer, hereinafter mentioned.

G indicates a setting tool or hammer, the lower end of which ispositioned over the notch F' in the gage and the groove A in thebase-plate and the upper end of which (indicated at G) provides astriking lug or end for a hammer or the like in the hands of theoperator using the set. The tool or hammer G is provided with arearwardly-extending down-bent spring-shank H, which is Vsecured to thebase-plate A in rear of the gage in any convenient or desired manner.Preferably the lower end of the shank is flattened and is provided witha slot H, through which passes an upwardly-exten din g screw-threadedbolt I, on which is screwed a thumb-nut J, a washer K being preferablyinterposed be- With this construction it will be readily understood thatthe hammer or tool Goan be readily adjusted to register with the notchin the gage and the groove in the plate A.

It is believed the operation or manner of use of the device will bereadily understood.

The saw is placed on the forward end of the plate A beneath the springholding-jaws D D', which for the purpose of ready operation extendbeyond the end of the base-plate. The gage E if not suitably adjustedfor the `saw to be operated upon is then adjusted to give the properdepth of set to the teeth. The operator then by simply sliding the sawbeneath the spring holding-jaws, which can be done by bringingsufficient pressure to bear on the saw, brings one of the teeth of thesaw beneath the lower end of the setting tool or hammer, when by a blowwith a hammer or the like on the tool G the tooth is bent or setdownwardly, the extent of the lateral displacement or set of the toothbeing determined by the inclination of the face of the groove A' and theadjustment of the gage E, but the lateral displacement of all the teethalways being the same.

Having thus described my invention, what I claim as new, and desire tosecure by letters Patent, is-

I. In a saw-set, the combination of a baseplate having in its upper facea groove Al and said base-plate affording on one side of said groove asupport for thesaw, a gageplate adjustably secured on the base-plate onthe opposite side of said groove, springpressed holding-jaws secured tosaid baseplate and adapted to hold the saw thereon, and a setting toolor hammer secured to said base-plate between said holding-jaws,substantially1 as described.-

2. In a saw-set, the combination of a baseplate providing a support fora saw, clamping-jaws pivoted to said base-plate on the sides thereof,said jaws having lateral enlarged holding portions adapted to overhangthe base-plate, springs acting to move the jaws toward the base-plateand a setting tool or hammer secured to the base-plate betweep the jaws,substantially as described.

3. In a saw-set, the combination of a baseplate, provided with a grooveA in its upper face said upper face on one side of said groove forming asupport for a saw, a gageplate adjustably secured to the upper face ofsaid baseplate on the other side of said groove, holding-jaws for thesaw secured to said base-plate, a setting tool or hammer provided with ashank, and means for adjustably securing said shank to the base-plateindependently of said gage, and on the side of the gage opposite saidgroove, substantially as described.

4. In a saw-set, the combination of a baseplate A having a groove A inthe upper face thereof, the upper face on one side of said grooveaffording a support for a saw, holding-jaws D, DQ pivoted to the sidesof said base-plate and having inwardly-projecting lateral enlargementsD2, springs E for moving said jaws to clamp the saw, a gage-plate Fprovided with slots and located on the baseplate on the side of saidgroove opposite to the saw-supporting portion, screws passing throughsaid slots in the gage-plate, set-nuts working on said screws, asett-ing tool or hammer G having a spring-shank, a screw I secured tothe base-plate and passing through a slot in said shank, said slot beingenlarged to permit the lateral and longitudinal adjustment of thesetting-tool, and a nut working on said screw for clamping thesetting-tool in adjusted positions, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM MATHEWS.

Witnesses:

CARL. A. ANDERSON, D. C. KELLEY.v

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